.canvas-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.bottom-toolbar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100px;
  background: #fff;
  border-top: 1px solid #eee;
  display: flex;
  align-items: center;
  padding: 0 20px;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.pen-container {
  width: 60px;
  height: 60px;
  margin-right: 20px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid transparent;
}

.pen-container img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.pen-container.active {
  border-color: #1890ff;
  background: #e6f7ff;
}

.color-picker {
  margin-left: auto;
} 